Three people are invited to participate in a seminar. Assume all four people arrives independently, and the probability of any one of them is late is 0.2. Let X be the number of late participants of the seminar. . Find the distribution (pmf) of X. Calculate the mean and the variance of X.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Three people are invited to participate in a seminar. Assume all four people arrives independently, and the
probability of any one of them is late is 0.2. Let X be the number of late participants of the seminar.
Find the distribution (pmf) of X.
Calculate the mean and the variance of X.
Transcribed Image Text:Three people are invited to participate in a seminar. Assume all four people arrives independently, and the probability of any one of them is late is 0.2. Let X be the number of late participants of the seminar. Find the distribution (pmf) of X. Calculate the mean and the variance of X.
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